a humpback whale off the coast of Mexico


Pew Bertarelli Ocean Legacy

Pew Bertarelli Ocean Legacy: Revillagigedo

The remarkable ecological and geological landscape of the Revillagigedo Archipelago earned the island chain in the Pacific Ocean off Mexico its recognition as a UNESCO World Heritage site in 2016. The four volcanic islands—Socorro, Claríon, San Benedicto, and Roca Partida—are sometimes referred to as the Mexican Galapagos and sit about 400 kilometers (250 miles) south of the Baja Peninsula.

The waters around the islands have the highest number of coral species in the Mexican Pacific, which helps support an ecosystem with 366 species of fish, including 26 found nowhere else. Four species of sea turtles nest, feed, and breed on the archipelago, while at least 28 species of sharks have been observed in the region. Humpback whales, which seek warmer waters for their calving grounds, make their winter home in Revillagigedo.

The islands and their seamounts are located at the convergence of the cooler waters of the California Current and the warmer waters of the North Equatorial current. This mixing of currents creates conditions that allow for upwellings that bring nutrients from the ocean floor to the surface, nutrients that support areas rich in marine life. The region also contains significant underwater volcanic features, including lava flows and hydrothermal vents that  support diverse ecosystems without any sunlight and under some of the most extreme conditions on Earth.

On Nov. 24, 2017, Mexican President Enrique Peña Nieto signed a decree creating the Revillagigedo Archipelago National Park. The park spans 148,087 square kilometers (57,177 square miles), an area the size of the Yucatan Peninsula on the country’s eastern coast. This action will help Mexico protect marine life throughout the islands and preserve an important hub of connectivity for species that migrate across the Pacific.

The Pew Bertarelli Ocean Legacy Project worked with Beta Diversidad and the Coalition for the Defense of the Seas of Mexico (CODEMAR), two Mexican environmental organizations, to provide technical and scientific support for the establishment of this reserve and to raise awareness about the benefits of preserving the waters surrounding the archipelago.

Pew Bertarelli Ocean Legacy Project

The Pew Charitable Trusts and the Bertarelli Foundation joined forces in 2017 to create the Pew Bertarelli Ocean Legacy Project. This effort builds on a decade of work by both organizations to protect the ocean. Pew’s Global Ocean Legacy initiative, established in 2006, helped obtain commitments to safeguard more than 6.3 million square kilometers (2.4 million square miles) of ocean by working with philanthropic partners, indigenous groups, community leaders, government officials, and scientists. Since 2010, the Bertarelli Foundation has worked to create marine protected areas around the globe and simultaneously advance our understanding of marine science.

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Fact Sheet

Revillagigedo Archipelago

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Fact Sheet

Revillagigedo Archipelago

The Revillagigedo Archipelago sits off Mexico’s Pacific coast, about 800 kilometers (500 miles) west of the city of Manzanillo and 400 kilometers (250 miles) south of Cabo San Lucas. With its rich ecological and geological landscape, the volcanic island chain was named a UNESCO World Heritage site in 2016.